To ensure optimum results with the Quik Drive Project Pro screw driving tool, it's necessary to use the right driver bit. The all-in-one bit and mandrel included in the Project Pro screw driving tool package should be sufficient to drive the entire box of collated fasteners; however, variations in materials and driving techniques can shorten driver-bit life. Replacement bit and mandrel are available below. 

• Integrated T25 driver bit and mandrel designed exclusively for Project Pro
• Industrial grade T25 6-lobe drive provides reliable installation performance
• Specially made for a secure fit with Simpson Strong-Tie fasteners
• Easy to remove and re-install — simply snap it into place; no special tools required